He said that limitation " could become a drag on the company's overall efficiency."

他说，这种限制“可能会拖累公司的整体效率”。

The university can invest in improving the overall energy efficiency of the buildings by improving insulation and reducing heat loss through windows and walls.

大学可以花钱投资改善教学楼的整体效能，通过改善隔温以及减少窗户和墙的热量损失。

It's an incredibly complex operation and so you can optimise one small part of it, but that doesn't mean to say you're gonna improve the overall efficiency of the entire port.

这是一个非常复杂的操作， 所以你可以优化它的一小部分，但这并不意味着你会提高整个港口的整体效率。